Shirou Tokisada Amakusa

The Master of Assasin of Red, Shirou was dispatched by the Church as one of the Masters of the Red Faction. ~!He is actually a Ruler-class Servant of the Einzbern Master‎‎ in the Third Holy Grail War. He was later materialized due to having come into contact with the Greater Grail and managing to receive flesh.!~ He wants to make use of the Holy Grail War to fulfill his own wish. He has no connection to Shirou Emiya of the Fate/stay night timeline.